Zitap/zitap/templates/widgets/slot-picker.html

<div class="slot-picker" id="{{ widget.attrs.id }}">
  {% for day in widget.grid.days %}
  <div class="slot-column">
      <div class="day">{{ day.date|date:"M d" }}</div>
      {% for slot in day.slots %}
      <div class="slot {% if slot.is_full_hour %} full-hour{% elif slot.is_half_hour %} half-hour{% endif %}" title="{{ slot.tooltip }}">
          {% if slot.is_full_hour %}<div class="time-label">{{ slot.time|date:"H:i" }}</div>{% endif %}
          <input class="checkable" type="checkbox" id="slot_picker_{{ slot.offset }}" name="slot_{{ slot.offset }}" />
          <label class="checkable" for="slot_picker_{{ slot.offset }}"></label>
      </div>
      {% endfor %}
  </div>
  {% endfor %}
</div>